Multi-year and multi-site field plot experiments were carried out, combined with pathogen population structure sequencing to compare disease severity and microecological differences between monoculture and mixed-genotype planting systems.
Key Findings:
Enhanced genetic diversity of rice populations significantly reduced field incidence and disease index of rice blast.
Genotype mixture altered pathogen transmission pathways and restricted the expansion of dominant virulent strains.
The feasibility of green disease control by utilizing crop genetic diversity was verified in field trials, providing theoretical support for optimizing disease-resistant rice cultivation patterns.